Connected: An Internet Encyclopedia
RFC 1034 - 3.4. Example name space

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### 3.4. Example name space

The following figure shows a part of the current domain name space, and is used in many examples in this RFC. Note that the tree is a very small subset of the actual name space.

                                       |
                                       |
                 +---------------------+------------------+
                 |                     |                  |
                MIL                   EDU                ARPA
                 |                     |                  |
                 |                     |                  |
           +-----+-----+               |     +------+-----+-----+
           |     |     |               |     |      |           |
          BRL  NOSC  DARPA             |  IN-ADDR  SRI-NIC     ACC
                                       |
           +--------+------------------+---------------+--------+
           |        |                  |               |        |
          UCI      MIT                 |              UDEL     YALE
                    |                 ISI
                    |                  |
                +---+---+              |
                |       |              |
               LCS  ACHILLES  +--+-----+-----+--------+
                |             |  |     |     |        |
                XX            A  C   VAXA  VENERA Mockapetris

In this example, the root domain has three immediate subdomains: MIL, EDU, and ARPA. The LCS.MIT.EDU domain has one immediate subdomain named XX.LCS.MIT.EDU. All of the leaves are also domains.

Next: 3.5. Preferred name syntax

Connected: An Internet Encyclopedia
RFC 1034 - 3.4. Example name space